Originally Posted by Rddvl23
couldn't you just cut the signal wire and splice it into the third light instead of running new wires? you already have a ground wire all you would have to do is cut the Major wire and connect it to the new bulb...or no?
There are 5 wires:
3) reverse light
4) combination brake/left turn signal
5) combination brake/right turn signal
The ground, reverse, and taillight wires you can re-use, but if you want the brake light and the turn signal to be seperate bulbs (my turn signals are amber) then you need to run 3 wires:
1) left turn signal
2) right turn signal
Obviously the ground, taillight, and reverse split off to both taillights. The new brake line will also split off to both taillights, and the turn signals will obviously only go to their respective sides.
edit: Since the 3rd bulb on those taillights is a single-stage bulb, what I might do is wire it up as a taillight, but with a ground-interrupt like the front blinker mod, so that you'll get a cool flashing effect with the turn signal on (when the taillights are also on.) Thats what I would do if I had taillights with 2 red sections.